Masonite

(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Also known as
  • Masonit
  • Masonita

Where it forms, where it's found

2recorded occurrences
Source · OpenStreetMap

Physical

Colour
Dark greyish-green

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen715.999111.993
33.82%
26FeIronIron155.84555.845
16.86%
25MnManganeseManganese154.93854.938
16.59%
13AlAluminiumAluminium226.98253.964
16.30%
14SiSiliconSilicon128.08528.085
8.48%
12MgMagnesiumMagnesium124.30524.305
7.34%
1HHydrogenHydrogen21.0082.016
0.61%
Total331.146100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From Mindat formula

Synonyms

  • Masonit
  • Masonita

Literature, links & citation

Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Masonite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/masonite-4996},
  note      = {Accessed 2026-05-11}
}